My M5 Shockproof cranks are easily knocked out of alignment no matter how hard I tension up the two holding bolts on the underside of the boom.
Does anyone know of any after market bracket or homemade fix? I would assume the problem will only get worse with wear. Any ideas shared would be greatly appreciated.

G'day Brad, if you find that you're still having difficulty securing the boom after applying the other recommendations, it might be that you just need a bit more clamping pressure. These hydraulic hose clamps work a treat and in reality don't look all that bad, well OK they look better than a daggy old muffler clamp. These suckers have got some bite too AND they're available in stainless steel so no worries about it rusting away. Enzed or Pirtek will be able to help you out. This particular unit is a Mikalor Supra but there'd a hundred others just like it under another name. Good luck

bradwoodbr wrote:By the way have you ever ridden a medium to low racer?If you have what did you notices as the big advantages with your Bachetta. I am thinking of upgrading and don't know which way to go yet.

CheersBrad

A bit more on this - I think you should start a thread for this question. There are a few people here who could offer opinions on why they chose what they did.

Just be sure to let us know what you're unhappy about with your current bike and what area you'd like to see an improvement in.

Cheers,
Graeme

Think outside the double triangle.---------------------Music was better when ugly people were allowed to make it ....

Hi Graeme and Harry,
Thanks for your ideas and comments. Harry I will definitely get one of those stainless steel clamps and give it a try.
Graeme, your idea of swaping bikes on a ride is a good one. We are about the same height, so fitting would be fine. Let's do this soon. Will contact you out of forum.

From a fitting point of view regarding your clamping boom I find it strange the fit is less than stellar. Without looking at it things that crossed my mind were the screws bottoming out or threads not cut deep enough into the frame screw housings. I'm assuming also there is a slot cut along the underside of the boom housing too. Sometimes a lubricant is used to prevent corrosion, this is a mistake on clamping surfaces such as this and should be spotless. If anything, something like WD40 wiped on, and then vigourously cleaned off with a soft cloth will do. Do not rough it up with anything, a clamped smooth surface will have greater friction resistance.
Also check that the boom and housing are actually round. There is a lot of torsional force placed in the front boom and distortion can happen from a strong rider or a possible mishap.
Hope you find the problem then you'll have the solution.

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